/*
 * Copyright (C) 2010 Yury Kudryashov.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package name.kudryashov.functions;

import name.kudryashov.base.Argument;

class NotPredicate<A> implements Predicate<A> {
    private final Predicate<A> predicate;

    public NotPredicate(Predicate<A> predicate) {
        this.predicate = Argument.requireNotNull(predicate, "predicate");
    }

    public boolean apply(A arg) {
        return !predicate.apply(arg);
    }

    @Override
    public String toString() {
        return "not(" + predicate + ")";
    }
}
